Describe how artihmetic process in CPU and ALU.

1. Arithmetic Operations Ir. SNMP Simamora, MT. Laboratorium Sistem Komputasi & Jaringan Akses

3. Computer Systems General Scheme

5. Serial Adder – simplified block diagram

6. Serial Adder – Data at start

7. Serial Adder – After first shift pulse

9. Parallel Adder – logic diagram

14. Solution: sign sign 1 101100 1 101011 010100 – 20 1 110111 1 110110 001001 – 9 1 111101 1 111100 000011 – 3 0 001100 0 001100 001100 +12 0 001111 0 001111 001111 +7 Signed (2’s complement) Signed (1’s complement) Absolute magnitude Number

15. Description Solution:

16. Ex: (00011001) 2 + (00010011) 2 = (…) 2 Solution:

17. Ex: (00011001) 2 - (00010011) 2 = (…) 2 Solution: